Liquid dispensing device



Nov 19, 1946. s. KIRSCHENBAUM LIQUID DISPENSING DEVICE 2 Sheets-Sheet 1 Filed Jan. 8, 1943 34mm mesa/Emma? 4 7' rozz/vay vii",

Nov. 19, 1946. s. KERSCHENBAUM LIQUID DISPENSING DEVICE 2 Sheets-Sheet 2 Filed Jan. 8, 1943 Ava/1 ATTORN EY Patented Nov. 19,1946

UNITED STATES PATENT OFFICE LIQUID DISPENSING DEVICE Samuel Kirschenbaum, Brooklyn, N. Y.

Application January 8, 1943, Serial No. 471,654

12 Claims.

This invention relates to liquid dispensing devices. More particularly my invention relates to an improved construction of devices for dispensing liquids in the form of drops.

One of the objects of my invention is to provide novel and improved constructions for liquid dispensing devices in which liquid may be automatically dispensed from bottles or similar containers, in the form of drops by merely tilting or inverting the containers and in which the size and rate of flow of the drops can be controlled.

Another object of my invention is to provide a novel and improved construction for drop dispensing devices of the class described which shall be particularly effective in connection with the use of Vitamin oils, lubricating oils, medicines, and any other similar products, and which will dispense the liquid in the form of drops, independently of the skill of the user.

A further object of my invention is to provide a novel and improved construction for drop devices of the class described which shall be characterized by simplicity of construction and operation together with the high degree of effectiveness in use.

Other objects of my invention will in part be obvious and in part hereinafter pointed out.

In the accompanying drawings, in which is shown a number of the various possible embodiments of this invention;

Fig. 1 is an enlarged vertical cross-sectional view of the upper portion of a drop bottle or similar device constructed and arranged in accordance with my invention;

Fig. 2 is a top plan view thereof with the screw cap removed;

- Fig. 3 is a bottom plan view of a portion of the device shown in Fig. 1 as viewed substantially along the line 33 thereof;

Fig. 4 is an elevational view of a part of the device shown in Fig. 1, and removed from the bottle; i Fig. 5 is a vertical cross-sectional view simi lar to Fig. 1, but with the screw cap removed and illustrating a modified form of construction;

Fig. 6 is a bottom plan view thereof as viewed substantially along the line 6-6 of Fig. 5;

Fig. '7 is a vertical sectional View similar to Fig. 5, but illustrating still another modified form of my invention;

Fig. 8 is an elevational view of a part thereof, and removed therefrom;

Fig. 9 is a fragmentary vertical sectional view of a part of the device illustrated in Figs. 5 to 8,

but showing a modified construction for the bottom wall thereof;

Fig. 10 is a vertical sectional view similar to that shown in Figs. 5 and 7, but illustrating still another modification of my invention;

Fig. 11 is a top plan view of a portion thereof with the screw cap removed;

Figs. 12, 13 and 14 are vertical cross-sectional views, similar to Fig. l, but illustrating other modified forms of my invention; Fig. 15 is a cross-sectional View taken substantially on the line l 5-l5 of Fig. 12;

Fig. 16 is a cross-sectional view taken substantially on the line I6I6 of Fig. 13; and

Fig. 17 is a top plan view of the Fig. 14 form of construction with the screw cap removed. v

Referring now in detail to the drawings and more particularly to Figs. 1 to 4 thereof, I have shown my improved liquid drop dispensing device constructed and arranged in accordance with my invention and comprising a bottle or other suitable similar container 20 for liquids, which it is desired to dispense in the form of drops. The bottle 29 may be provided with the customary neck 20a surrounding an orifice 20b, throughwhich the bottle is adapted to be filled and from which the contents are normally dispensed. Into the bottle opening 20b, I frictionally place a stopper member 2 I, which may be of any well known stopper material, such as, for example, cork, rubber or plastic or the like. It is noted that the stopper 2| is disposed so that the top surface thereof is substantially ilushwith the top edge of the neck 20a. The stopper 2 [is provided with a through aperture 22 into which I frictionally place a tubular member 23 passing vertically through the aperture 22 and having a portion 2.3a thereof projecting above the top surface of the stopper for a predetermined distance. The uppermost portion of the tapered bottom of the tubular member 23 may be substantially at the same level with the bottom surface of the stop-- per, as shown. A portion 23b of said tapered bottom of said stopper 53 projects below the said stopper 2 I' for a predetermined distance, the purpose and function of which will soon be explained.

The tubular member 23 maybe provided with an outwardly projecting shoulder or flange 2 which is adaptedto rest upon the top surface of the stopper 2| to limit the downward distance of insertion of the tubular member 23 in the aperture 22. It is noted that the flange 24 is made sufliciently wide so that it will also abut and rest upon the top rim of the neck 20a of the bottle. This is done so as to limit the downward disthe tubular member 25 is provided with an aperture 26 communicating with the interio of the bottle 20 and with the interior of the tubular member 25. It is here noted that it is intended that the space between the tubular member 23 and the wall of the stopper surrounding the aperture 22 shall be leak proof, so that no liquid from the bottle will pass therebetween when the bottle is turned 0r tilted for use. However in accord; ance with my invention I provide a capillary passageway between the outer surface of the tubular member 25 and the inner surface of the tubular member 23. One of the ways in which this capillary passageway may be designed is the followmg:

The inner tubular member 25 may b made slightly eccentric with respect to the outer tubular member 23 to provide a relatively thickened wall portion 25a (see Figs, 2 and 3) In this thickened Wall portion 2511 there is provided one or more capillary grooves 28.

As a preliminary to describing the operation of the devices illustrated in the drawings, I wish to call attention to the use of the term free liquid which willappear hereinafter in such descriptions andwhich is also referred to and explained in my copending application.

When a bottle or similar container having a restricted opening is turned. sharply downward so that the liquid contained therein covers the opening completely, part of the liquid will pass out through such opening without any air enterr,

ing the bottle to replace it. The quantity of the said part of the liquid which passes out of the increases at each successive time of use.

It is thus seen from the above described construction of the Figs. '1 to {i form of my device that when the bottle 26 containing theliquid to be dispensed is tilted or inverted, the following action takes place:

The free liquid passes by gravity through the capillary space provided between the tubular members 23 and 25 accumulating on the inner flared surface of the projecting portion 23a of the tubular member 23, from which it is expended in the form of drops. Thisaction is facilitated by the capillary groovesZB on the outer surface of tubular member 25. -Atthe sametime, free liquid also passes through theaperture 261 and into the tubular member 25, from which it flows to meet and coalesce with the liquid leaving the capillary space between the tubular members. as Well as grooves 23, thus forming asinglestream which ultimately falls in the form of drops from the flaredportion 23a. When all the free liquid has been thus expended, the minus pressure with- 4 in the bottle 25 causes a bubble of air to break through opening 25 into the bottle. This bubble releases a small amount of free liquid which is in turn expended after which another air bubble enters the bottle and so 011. Thus a continuous action of expending liquid in the form of drops is set up, the rate of iiow of which determined by the size of the capillary space provided between the tubular mel lbers 23 and 25. As matter of fact, the rate of flow of the drops may be increased to a point where the drops flow so fast as to form a substantially continuous stream of I liquid.

Upon restoring the bottle to an upright position, the minus pressure within the bottle exerts a pull on the liquid remaining in the capillary spaces causing it to return to the contents of the bottle.

- To facilitate the ah-ovedescribed action of automatically dispensing the iiquid in the form of drops, I provide one, or more slits iii! in the wall of the tubular member 25 extending downwardly from the top edge thereof .for a predetermined distance. the interior of he tubular member 25 and with the capillary,passagewaysiil. To prevent the liquid from, travellingto undesired outer surface areas of the bottlawhen used, I design the extending portion 23a of the tubular member 23 to be outwardly flared, as fully described in my hereinbefore mentioned copending application, Serial No. 425,274.

As above described, when the bottle .29 has been restored to upright position after use, any liquid remaining in the flared portion 23a of the tubular member will be drawn downwardly through the capillary passageways and to the depending portion 231) from whence it Will fall off in drops D tojoin thereontents in the bottle. To facilitate the capillary flow of such unused liquid, I provide capillary grooves 3! (see'Fig. 4) in the projecting portion 23b of the outer tubular member 23. 'There may also be provided a capillary groove 32 in the bottom surface of'the bottom wall 25a of the inner tubular member 25,

the said groove leading from the aperture 26 to the capillary passageways 28 and to the grooves 3}. To further facilitate thereturn flow of the unused liquid, the bottom wall 25a of the tubular member 25 may be slanted downwardlytoward theextending portion 2 5 as shown. l v r I i standard screw cap member 35 may be threadedly receivedon the neck 2 (id; of the bottle and a suitable'washer 35, of cork or other similar washer material, may be provided to seal the device againstleakage or evaporation during shipment or when not in use. 1

While in the Figs. 1 to 4.form of my invention,

23 or- 25. Such capillary passageway may also be formed-by making the cross-sectional contours of the nested tubular members slightlydifferent so as'to provide capillary spaces therebetw een, as shown and described in'connecti'on with the devices shown in my said copending application, Serial No. 453,513.

The said slitstfi communicate with 23b of the tubular member- Figs. 5 and 6, I have shown a modified form of construction for carrying out my invention in which the bottle 2i], its neck 25a and stopper 2| are the same as that shown and described in connection with the Figs. 1 to 4 form of my invention. In this form I provide the outer tubular member 45 with a bottom wall 40a having a relatively large aperture 4| into which I frictionally place the inner tubular member 42. The said tubular member 42 has a bottom wall 42a with an aperture 43 communicating with the interior of the bottle and with the interior of the tubular member 42. The necessary capillary passageways between the tubular members 48 and 42 are provided by a series of radially disposed notches 45 cut in the bottom wall 450. of the tubular member 40 and extending outwardly from and communicating directly with the aperture 4 i.

In Figs. 7 and 8, I have illustrated still another modified form of construction of my invention in which the stopper 2| is provided with an outer tubular member 55 similar to the tubular member 23 except for the extending portion 23b of the latter. Nested within the tubular member 5|] is a tubular member 5| open at the top and having a bottom wall 5|a with an aperture 52. The top of the said tubular member 5| is provided with an outwardly extending flange 53 of larger diameter than the outer wall of the tubular member 5| and engaging the flared wall of the projecting portion 560. of the tubular member 50. The said flange 53 is so designed with respect to the flared portion 59a as toprovide a capillary space therebetween. For a predetermined distance adjacent to the flange 53 the outer wall of the tubular member 5| is provided with a circumferential recess 55 forming an annular space between the tubular members 55 and 5|. That portion of the outer surface of the tubular member 5| below the recessed area 55 is designed to provide a loose fit with the adjacent inner wall of the tubular member 55 of such nature as to form a capillary passageway between the said tubular members 55 and 5|. This last named capillary passageway communicates with the interior of the bottle, with the capillary passageway between the flange 53 and the flared portion 50a, and with the recessed area 55. To facilitate the capillary path between the recess 55 and the flared opening of the tubular member 58, I may provide notches or slits 51 out in the flange 53' extending downwardly from the top rim of the tubular members 5| to at least as far as the recessed area 55.

It i noted that the bottom wall 5|a is slanted like the wall 25a, but it is understood, however, that the same, as well as the wall 25a may be straight or rounded.

In Fig. 9 of the drawings, I have shown the bottom wall of the inner tubular member which I shall designate as 65, and which is similar in function to that of the tubular members 25, 42 or 5|, as dished or hollowed inwardly with its aperture which I shall designate as 6|, set back from the bottom, as shown.

I have found that this particular form of construction gives highly satisfactory results.

While in the drawings thus far described, I have shown my invention as adapted for use with an ordinary standard type of bottle with a stopper member inserted in the opening, it is here noted that the essence of my invention also contemplates a construction whereby the container, or bottle is so mad that the use of a stopper may be eliminated. One such construction is shown 6 in Figs. 10 and 11' where I have illustrated. a bottle 10 provided with a relatively small neck portion a in which the orifice H has been brought down to a size approximately equivalent to the aperture 22 in the stopper 2|. Therefore, I need not provide an outer tubular member, such as 23, 40 or 5|] since the neck of the bottle serves as the outer tubular member. Instead, I nest my smaller tubular member 12 directly in the opening The said tubular member 12 may be eccentric with respect to the opening ll of the bottle to provide a thickened wall portion 12a in which there are one or more capillary grooves 15 or the capillary grooves or passageway may be iii 15 designed as in the other forms of myinventiornas hereinbefore described. A capillary space between the member I2 and the adjacent wall of the bottle opening 1| may be provided by making the tubular member 12 fit loosely in the opening II. The bottom wall 12a is provided with an aperture I5 and slits 18 may be provided in the wall of the tubular member l2 extending downwardly from the top edge thereof for a predetermined distance. The function and purpose of the grooves 15, the aperture land the slits 75 are similar to that of the grooves 28, aperture 26 and slits 30 of the Figs. 1 to 4 form of 'my invention. A screw cap 19 and washer Eta of standard design may be provided.

In the Figs. 5 to 11 forms of my invention, just described, the operation is the same as that described in connection with my Figs. 1 to' 4 form, with the free liquid passing through the capillary passageways and expended in the form of drops, after which an air bubble enters the bottle and releases some more liquid to be expended and soon until the supply of liquid in the bottle is exhausted.

In Figs. 12 and 15 of the drawings, my inven- 40 tion is shown as applied to a specifically designed screw cap. In this form, I employ the tandard type of bottle 80 having an externally threaded neck portion 80a adapted to threadedly receive thereon a depending portion 8 la of a screw cap 8 l.

an opening 82, an upwardly projecting annular or tubular portion 83 and a downwardly projecting annular or tubular. portion 84 surrounding the said opening 82. It is noted that the tubular portion 84 terminates at its lower end in a rel atively small opening 85 communicating directly with the interior of the bottle. Nested within the tubular portions 83 and 34 is a tubular member 85, the upper end of which is substantially flush with the upper end of the tubular portion 83, and having its lower end terminating in a relatively small opening 81, similar to the opening 85 of the tubular portion 84, but spaced above the said opening 85. The opening 81 communicates directly with the interior of the tubular portion 84. In accordance with an essential feature of my invention, I provide a capillary passageway between the tubular member 86 and the tubular portions 83 and 84. This capillary passageway may take the 'form of making the cross-sectional contours of the tubular portions'33, 84 and the tubular member 86 of different shapes, as illustrated and described in my said copending application, Serial No. 425,274. The said capillary passageway may also be formed by the methods illustrated in Figs. 1 to 10 of the drawings or by the form shown in Figs. 12 and 15 in which the inner wall of the tubular member 83 may be provided with radially spaced projections 9| adapted to frictionally contactively engage the outer surface The top wall Blb of the cap 8| is provided with of the tubular member 85 to thus provide a slight annular space between the tubular member 85 and the tubular portions 83 and 86. In addition to this annular capillary space a number of circumferentially spaced capillary grooves 88 are provided on the outer surface of the tubular member 86, running lengthwise thereof. Also, a number of circumferentially spaced capillary grooves 89 are provided on the inner surface of the tubular portions 83, 84, the said groovestfi and 39 being preferabl in staggered relationship. It is noted here that I have found that satisfactory results are also obtained when either the grooves 88 in the tubular member 86 or the grooves as in the tubular portions 83, 84 are used alone to provide the capillar passageway.

If desired and to facilitate the capillary how of the liquid which enters the opening 3?, I may provide capillary grooves 92 on the inner wall of the tubular member 85.

As a means to facilitate the flow of liquid into the annular capillary space between the tubular member 86 and the tubular portions 83, 8t, and also to insure the egress of substantially all the liquid from the container, I provide an aperture 84a in the wall of the tubular portion 86 disposed adjacent the top of the bottle 8d and communicating with the annular space between the tubular portions 83, 8 and the tubular member 355, so that liquid collecting in the annular area A surrounding the tubular portion 84 and past the aperture 85 will be dispensed.

As noted in Fig. 12, the upper ends of the tubular portion 83 and of the tubular member 86 are outwardly flared to provide a lip from which the drops will fall to prevent liquid from running over to undesired outer surface areas of the-cap and bottle. This feature is fully explained in the said copending patent application, Serial No. 425,274.

A suitable washer member 9! may be provided between the screw cap BI and the opening of the bottle to render the device leakproof. To prevent leakage of the contents of the bottle through the tubular portions 83, 84 and the tubular member 35, when the bottle is packed for shipment or storage, I provide a second screw cap member 93, threadedly received on the tubular portion. 83 and having its top wall eta contactively overlying the top flared rims of the tubular portion 83 and the tabular member 8&3. A suitable washer member d maybe employed between the tops of the members 83 and 86 and the screw cap wall 93a.

The operation and action of this form of my invention is similar to that described in connection with the Figs, 1 to 4 form of my invention, as regards the free liquid and the capillary passageway. In this Figs. 12 and 15 form, however, I provide three channels which the free liquid may take:

1. Through the opening 36a into the annular passageway between the tubular member'iifi and the tubular portions 83, 84. i i

2. Through the opening 85 and into the said annular passage.

3. Through the opening and into the opening 8? to enter the tubular member 86 and to flow along the grooves 92.

It is noted that all three channels of flow or any two of them may be utilized at the same time and that they unite to form a single stream at .the dispensing point.

In Figs. 13 and 16, I have shown another form of construction for my device operating on a principle similar to the Figs. 12 and 15 form of my invention. In this form the same bottle is employed having an externally threaded neck portion on which is threadedly received the screw cap [Q5]. The top wall wit-a of the said screw cap It!) is provided with an opening ifil and an upwardly projecting tubular portion 6 E52, surrounding the said opening lEil, the said portion Hi2, being, in purpose and function the same as that of the tubular portion 83 shown in Fig, 12. In this form of construction I omit the downwardly depending tubular portion, similar to the portion 8 3, but I provide tubular member 583 nested within the portion H32 and having an integral portion ltd smaller in diameter and extending below the portion 1%, and into the neck of the bottle. The portion I63, terminates in a relatively small aperture m5 communicating directly with the interior ofthe bottle. At about the point of junction between the tubular parts let and list, I provide an outwardly projecting flange portion Hi5, contactively engaging the undersuriace of the top wall who and provided with an annular depending portion Nita, forming an angular recess for accommodating a washer member it? interposed between the top rim of the bottle and the cap ltd to prevent leakage of the liquid in the bottle. The capillary passageway leading from the interior of the bottle to the dispensing flared rims of the tubular portions 582 we may be provided in the following manner:

As clearly shown in Fig. 16, the outer surface of the tubular portion M32 is provided with circul'nferentially spaced capillary grooves it running lengthwise thereof, while the inner surface of the portion 563 is provided with circumferentially spaced capillary grooves 3 H39, running lengthwise thereof and preferably in staggered relation with respect to the grooves H38. If desired, circumferentially spaced capillary grooves l iii may be provided on the inner surface of the tubular portion Hid to facilitate the action of the flow of liquid passing through the aperture 665, to its dispensing point. Communicating with the capillary passageways formed by the grooves I08 and me, are one or more apertures Hi in the flange portion Hi8. These apertures ll! are relativcly small and the material on opposite surfaces of the said flange its is hollowed to provide a thin wall portion in which the said apertures are located. A second screw cap, similar in design and function to that of the cap 92 may be threadedly received on the tubular portion 32.

The tubular portions Hi2 and 583 are so designed as to provide a slight annular space therebetween similar to the construction described in connection with the Figs. 12 and ldform of my invention by means of the protuberances H5. The said annular space communicates with the grooves tilt and its andwith the interior of the bottle, through the apertures Hi.

The action and operation of the Figs. 13 and 16 form of my invention is similar to that described in connection with the other forms illustrated in the drawings and hereinbefore described.

In Figs. 14 and 17,1 have shown a form of construction for my invention which, in certain respects, is similar to the form illustrated in Figs.

10 and 11, because it eliminates the use of a stopper, but it has the added advantage of also eliminating the need of a specially designed screw cap. As shown in the drawings, this form of my invention has the essential features shown in the previously described forms of invention, namely 9.. a tubular member I nested within a tubular portion EM and a capillary passageway between the said tubular portion 12! and tubular member I 20.

The tubular portion IN is the constricted neck portion of a bottle I22 suitable for holding liquids which it is desired to dispense. The capillary passageway may be obtained by forming circumferentially spaced grooves I25 in the inner wall of tubular portion 12!, in the manner shown and described in my said copending application, Serial No. 453,513. As shown in Fig. 14, thetubular member may be angularly cut at the top and bottom edges to facilitate the action there of. In addition to the capillary grooves I25 I may provide a loose fit between the tube I23 and the tubular portion IZI to leave an annular capillary passageway for the same purpose and function as that of the annular capillary passageways hereinbefore described.

In accordance with the provisions of the patent statutes, I have herein described the principle and operation of my invention, together with the constructions which I now consider to represent the best embodiments thereof, but I desire to have it understood that the constructions shown are only illustrative and that the invention can be carried out by other means. Also while it is designed to use the various features and elements in the combination and relations described, some of these may be altered and others omitted without interfering with the more general results outlined, and the invention extends to such use.

Having described my invention, what I claim and desire to secure by Letters Patent is:

1. In a drop device of the class described, the combination of a container for liquids having a dispensing opening, a tubular member in said opening, said tubular member having a bottom wall and being open at the top, an aperture in said bottom wall communicating with the interior of said container and with the interior of said tubular member, a capillary groove in the outer wall of said tubular member, a slit in the wall of said tubular member extending downwardly from the top thereof, said slit communicating With said capillary groove, and a portion of the wall surrounding said dispensing opening extending beyond the top of said tubular member.

2. In a drop device of the class described, the combination according to claim 1 in which the said last named extending wall portion is outwardly flared.

3. In a drop device of the class described, the combination of a bottle or similar container for liquids having an opening, a stopper member in said opening, said stopper member having a through aperture communicating with the interior of said bottle and with the surrounding atmosphere outside said bottle, an outer tubular member in said aperture, an inner tubular member nested within said outer tubular member, a groove in one of said tubular members to provide a capillary passage way between said tubular members, a fractional portion of the wall of said outer tubular member extending below the general level of the bottom opening thereof to facilitate the return of the unused liquid to the contents of the bottle when the said bottle is placed in upright position.

4. In a drop device of the class described, the combination according to claim 3 in which slits are provided in the surrounding wall of said inner tubular member, said slits extending downwardly from the top edge thereof for a predeter- 1'0 mined distance, and communicating with said capillary, passageway. I

5. In a drop device of the class described the combination of: a bottle or similar container for liquids, an opening in said bottle, a stopper mem-' so constructed and arranged as to provide a cap illary space therebetween through which liquid from the bottle may pass and a slit in the side.

wall of said second tubular member, extending downwardly from the top thereof, said slit communicating directly with the interior of said second tubular member and with said capillary space.

6. For use with a bottle or similar container for liquids, a closure cap device adapted to be attached to said bottle, said closure device having a top wall, a through aperture in said top wall communicating with the interior of said bottle, a tubular wall surrounding said aperture, said tubular wall having a part projecting above said wall and a part extending downwardly from said top wall, a second tubular member nested within said tubular wall, said tubular wall and said second tubular member being so constructed and arranged as to provide a capillary space therebetween.

7. For use with a bottle or similar container for liquids, a closure cap device adapted to be attached to said bottle, said closure device having a top wall, a through aperture in said top wall communicating with the interior of said bottle, a tubular wall surrounding said aperture, said tubular wall having a part projecting above said top wall and a part extending downwardly from said top wall, a second tubular member nested within said tubular wall, said tubular wall being relatively widely open at the top and having a relatively constricted opening at the bottom thereof communicating with the interior of the bottle, said second tubular member and said tubular wall being so constructed and arranged as to provide a capillary space therebetween.

8. For use with a bottle or similar container for liquids, a closure cap device adapted to be attached to said bottle, said closure device having a top wall, a through aperture in said top Wall communicating with the interior of the bottle, a tubular wall surrounding said aperture, said tubular wall having a part projecting above said top wall and a part extending downwardly from said top wall, a second tubular member nested within said tubular wall, said tubular wall and said second member being so constructed and arranged as to provide a capillary space therebetween to permit the passage of liquid therethrough, said tubular wall and said tubular member each being relatively widely open at the top and having a relatively constricted opening at the bottom, the said constricted opening of said second member communicating with the interior of said tubular wall member and the said. constricted opening of said tubular wall member communicating with the interior of the bottle.

wan-a... 44..

9. A closure cap according to claim 8 in which the top edges of said upwardly extending tubular wall part and of said tubular member "are substantially flush with each other, and in which a screw cap member is threadedly received on said upwardly extending tubular wall part to seal the same against leakage during shipment and storage.

10. A closure cap according to claim 8 in which the top edges of said upwardly extending tubular wall part and of said tubular member are sub stantially flush with each other, and in which a screw cap member is threadedly received on said upwardly extending tubular wall part to seal the same against leakage, and in which an aperture is provided in the side wall of said downwardly extending tubular wall part, said last named aperture communicating with said capillary space.

11. A closure cap device according to claim '7 in which the said capillary space comprises a plurality of grooves.

12. For use with a bottle or similar container for liquids, a drop device adapted to be attached to said bottle, said device comprising a wall adapted to overlie the top of said bottle, an opening in aid wall communicating with the interior of said bottle, a tubular wall member surrounding said opening, a second tubular member nested within said tubular wall, said tubular member and said tubular wall being so constructed and arranged as tO provide a capillary space therebetween, said second tubular member being relatively widely open at the top and having a relatively constricted opening at the bottom thereof, said constricted opening communicating with the interior of the bottle.

SAMUEL KIRSCHENBAUM. 

